Datadog, Inc. — Director's Dealing 2021

Jan 6, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Datadog, Inc. (DDOG)
CIK: 0001561550
Period of Report: 2021-01-04

Reporting Person: Pomel Olivier (Director, Chief Executive Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-01-04	Class A Common Stock	C	321800	—	Acquired	485421	Direct
2021-01-04	Class A Common Stock	S	195854	$91.3667	Disposed	289567	Direct
2021-01-04	Class A Common Stock	S	45005	$92.1763	Disposed	244562	Direct
2021-01-04	Class A Common Stock	S	25180	$93.5113	Disposed	219382	Direct
2021-01-04	Class A Common Stock	S	30513	$94.2382	Disposed	188869	Direct
2021-01-04	Class A Common Stock	S	19109	$95.3754	Disposed	169760	Direct
2021-01-04	Class A Common Stock	S	2000	$96.4215	Disposed	167760	Direct
2021-01-04	Class A Common Stock	S	1339	$97.2846	Disposed	166421	Direct
2021-01-04	Class A Common Stock	S	2800	$98.7571	Disposed	163621	Direct
2021-01-04	Class A Common Stock	C	67400	—	Acquired	67400	Indirect
2021-01-04	Class A Common Stock	S	33420	$91.345	Disposed	33980	Indirect
2021-01-04	Class A Common Stock	S	9421	$92.125	Disposed	24559	Indirect
2021-01-04	Class A Common Stock	S	5775	$93.5265	Disposed	18784	Indirect
2021-01-04	Class A Common Stock	S	9794	$94.1884	Disposed	8990	Indirect
2021-01-04	Class A Common Stock	S	6790	$95.3565	Disposed	2200	Indirect
2021-01-04	Class A Common Stock	S	600	$96.6267	Disposed	1600	Indirect
2021-01-04	Class A Common Stock	S	400	$97.30	Disposed	1200	Indirect
2021-01-04	Class A Common Stock	S	1200	$98.7333	Disposed	0	Indirect
2021-01-04	Class A Common Stock	C	50000	—	Acquired	50000	Indirect
2021-01-04	Class A Common Stock	S	26229	$91.3736	Disposed	23771	Indirect
2021-01-04	Class A Common Stock	S	5738	$92.2408	Disposed	18033	Indirect
2021-01-04	Class A Common Stock	S	5287	$93.6466	Disposed	12746	Indirect
2021-01-04	Class A Common Stock	S	6546	$94.2945	Disposed	6200	Indirect
2021-01-04	Class A Common Stock	S	4600	$95.3948	Disposed	1600	Indirect
2021-01-04	Class A Common Stock	S	300	$96.5933	Disposed	1300	Indirect
2021-01-04	Class A Common Stock	S	500	$97.302	Disposed	800	Indirect
2021-01-04	Class A Common Stock	S	800	$98.7875	Disposed	0	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-01-04	Class B Common Stock	$	C	321800	Disposed		Class B Common Stock (321800)	Direct
2021-01-04	Class B Common Stock	$	C	67400	Disposed		Class B Common Stock (67400)	Indirect
2021-01-04	Class B Common Stock	$	C	50000	Disposed		Class B Common Stock (50000)	Indirect

Footnotes

F1: Each share of Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the nine-month anniversary of the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F2: Shares sold pursuant to a 10b5-1 plan entered into on September 14, 2020.

F3: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $90.88 to $91.87. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F4: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $91.88 to $92.86. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F5: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $92.88 to $93.87. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F6: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $93.88 to $94.86. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F7: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $94.88 to $95.75. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F8: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $95.95 to $96.55. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F9: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $97.25 to $97.30. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F10: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $98.49 to $98.83. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F11: Shares are held by the Olivier Pomel 2018 GRAT.

F12: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $90.83 to $91.82. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F13: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $91.83 to $92.78. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F14: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $92.83 to $93.82. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F15: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $93.83 to $94.80. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F16: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $94.84 to $95.72. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F17: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $96.17 to $97.16. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F18: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $98.35 to $98.83. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F19: Shares are held by the Pomel Descendents' 2018 Trust. Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest, if any, in the shares.

F20: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $90.90 to $91.89. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F21: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $91.90 to $92.88. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F22: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $92.92 to $93.91. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F23: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $93.92 to $94.91. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F24: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $94.92 to $95.69. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F25: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $96.17 to $97.06. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F26: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $97.25 to $97.36. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F27: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $98.49 to $98.83. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.